Average Weather in Ixtapa-Zihuatanejo Mexico
In Ixtapa-Zihuatanejo, the wet season is oppressive and overcast, the dry season is muggy and partly cloudy, and it is hot year round. Over the course of the year, the temperature typically varies from 75°F to 91°F and is rarely below 72°F or above 94°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Ixtapa-Zihuatanejo, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Ixtapa-Zihuatanejo begins around November 3 and lasts for 6.9 months, ending around June 1. On March 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.
The cloudier part of the year begins around June 1 and lasts for 5.1 months, ending around November 3. On September 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 93% of the time, and clear, mostly clear, or partly cloudy 7% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Ixtapa-Zihuatanejo varies very significantly throughout the year.
The wetter season lasts 4.2 months, from June 6 to October 13, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 68% on September 12.
The drier season lasts 7.8 months, from October 13 to June 6. The smallest chance of a wet day is 0% on April 13.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 68% on September 12.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Ixtapa-Zihuatanejo experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.9 months, from May 9 to February 7, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 12, with an average total accumulation of 8.2 inches.
The rainless period of the year lasts for 3.1 months, from February 7 to May 9. The least rain falls around April 7, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in Ixtapa-Zihuatanejo varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 5 minutes of daylight; the longest day is June 21, with 13 hours, 11 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:40 AM on April 1, and the latest sunrise is 1 hour, 3 minutes later at 7:43 AM on October 28. The earliest sunset is at 6:09 PM on November 22, and the latest sunset is 2 hours, 16 minutes later at 8:25 PM on July 6.
Daylight saving time (DST) is observed in Ixtapa-Zihuatanejo during 2017, starting in the spring on April 2, lasting 6.8 months, and ending in the fall on October 29.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Ixtapa-Zihuatanejo experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 8.8 months, from April 26 to January 20, during which time the comfort level is muggy, oppressive, or miserable at least 58% of the time. The muggiest day of the year is September 13, with muggy conditions 100% of the time.
The least muggy day of the year is March 19, with muggy conditions 44% of the time.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Ixtapa-Zihuatanejo experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.5 months, from February 27 to October 10, with average wind speeds of more than 3.2 miles per hour. The windiest day of the year is September 14, with an average hourly wind speed of 3.8 miles per hour.
The calmer time of year lasts for 4.6 months, from October 10 to February 27. The calmest day of the year is December 6, with an average hourly wind speed of 2.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Ixtapa-Zihuatanejo is from the west throughout the year.
Ixtapa-Zihuatanejo is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.3 months, from June 23 to October 2, with an average temperature above 85°F. The day of the year with the warmest water is August 5, with an average temperature of 86°F.
The time of year with cooler water lasts for 2.9 months, from February 10 to May 6, with an average temperature below 82°F. The day of the year with the coolest water is March 26, with an average temperature of 81°F.
Average Water Temperature
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.
The brighter period of the year lasts for 2.5 months, from March 5 to May 22, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is April 19, with an average of 7.1 kWh.
The darker period of the year lasts for 6.4 months, from June 27 to January 9, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is October 9, with an average of 4.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Ixtapa-Zihuatanejo are 17.643 deg latitude, -101.552 deg longitude, and 171 ft elevation.
The topography within 2 miles of Ixtapa-Zihuatanejo contains very significant variations in elevation, with a maximum elevation change of 1,903 feet and an average elevation above sea level of 318 feet. Within 10 miles contains very significant variations in elevation (3,435 feet). Within 50 miles also contains extreme variations in elevation (9,357 feet).
The area within 2 miles of Ixtapa-Zihuatanejo is covered by cropland (53%), water (22%), and trees (15%), within 10 miles by water (48%) and cropland (33%), and within 50 miles by water (50%) and trees (29%).
This report illustrates the typical weather in Ixtapa-Zihuatanejo, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Ixtapa-Zihuatanejo is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Ixtapa-Zihuatanejo, according to the International Standard Atmosphere .
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.